Watch Air Crash Investigation [National Geographic] with subtitles

I’ve been hunting for these Series for quite a while now:
Episodes in English

Watch Air Crash [National Geographic]... Season 12 (2012)
13 episodes
Watch Air Crash [National Geographic]... Season 11 (2011)
13 episodes
Watch Air Crash [National Geographic]... Season 10 (2011)
6 episodes
Watch Air Crash [National Geographic]... Season 9 (2010)
8 episodes
Watch Air Crash [National Geographic]... Season 8 2 episodes Watch Air Crash
2 episodes
Watch Air Crash [National Geographic]... Season 7 (2009)
8 episodes
Watch Air Crash [National Geographic]... Season 6 (2007)
3 episodes
Watch Air Crash [National Geographic]... Season 5 (2008)
10 episodes
Watch Air Crash [National Geographic]... Season 4 (2007)
10 episodes
Watch Air Crash [National Geographic]... Season 3 (2005)
13 episodes
Watch Air Crash [National Geographic]... Season 2 (2005)
6 episodes
Watch Air Crash [National Geographic]... Season 1 (2003)
6 episodes

The trouble is, I just can't seem to find anything with subtitles.

If anyone happens to have any working links online, download options, or even just the subtitle files themselves...

I would be incredibly grateful, truly.

P.s. I've already scoured Google, Bing, and pretty much everywhere else out there...